ZF 0636.101.030 CAP SCREW for WG180/WG200 | OEM Genuine Part

Overview

The ZF 0636.101.030 CAP SCREW is a critical fastening component engineered specifically for the WG180 and WG200 transmission series. This OEM genuine part secures the TRANSMISSION HOUSING assembly, ensuring precise clamping force to prevent fluid migration and structural fatigue under high-torque conditions. As a direct replacement for the original equipment, the SKU 0636.101.030 maintains the exact thread pitch and tensile strength required for ZF’s planetary gear systems. This cap screw is installed at multiple junction points within the transmission casing, where it anchors the OUTPUT FLANGE and related drivetrain components.

Symptoms of Failure

When the ZF 0636.101.030 cap screw degrades or loosens, operators may encounter these specific failure indicators:

• Transmission oil seepage around housing bolts – A worn cap screw loses its sealing preload, allowing ATF to weep past the O-RING interface.
• Abnormal gear engagement noise – Insufficient clamping permits micro-movement of the DISCONNECTION assembly, creating audible clunking during shifts.
• Vibration at the output shaft – A loose cap screw destabilizes the OUTPUT FLANGE, transmitting harmonics through the driveline.
• Torque converter shudder – Reduced structural integrity in the housing affects converter alignment, particularly under load in WG200 models.

Technical Specifications

Compatibility

This cap screw is validated for use in ZF WG180 and WG200 series transmissions, including all sub-variants such as WG180-2, WG180-3, WG200-4, and WG200-5. It also applies to certain ZF Ecomat models sharing the same housing architecture. The HEXAGON SCREW (0636020211) is frequently replaced concurrently during housing resealing procedures. For complete assembly integrity, verify that the TRANSMISSION HOUSING mating surfaces are free of debris before installation.

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